Since Mac OS X 10.8 software has to be signed to be installed without problems with Gatekeeper. As we are not able nor willing to pay for signing TV-Browser, you need to disable the Gatekeeper before installing TV-Browser. After successfully installing TV-Browser you can enable it again.
There are two options to disable Gatekeeper, at least the complete deactivation should work if option one will not:
Note: Since we are unable to create the OS X version of TV-Browser we need someone to send it to us, so the OS X version of TV-Browser is mostly delayed for some time after release of the other platform versions, so look here again in some days if only the former version is available here:
Download for Mac OS X with Oracle Java since version 7: tvbrowser_3.4.4_macjava.dmg from 2016-06-13